Metal-bound curbing.



A. E. DAVIS METAL BOUND GURBING. APPLICATION FILED I'EB.24, 1914.

Patented July 28, 1914,

WII'NESSES ATTORNEYS ANTHONY ELTON DAVIS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, .TO CLIP BAR MANUFACTURING COMPANY, OF PHILA- DELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

METAL-BOUND CURBING.

Specification of Letters Patent. PatentedJuly 28, 1914 Application filed February24, 1914. Serial No. 820,406.

To all whom it may concern:

Be it known that I, ANTHONY Enron DAVIS, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Metal-Bound Curbing, of which the following is a specification.

In view of the prohibitive cost of natural stone, such as granite, for curbing, and particularly the cost of transportation from the quarry to the place of installation, there has been in recent years generally employed a manufactured article in lieu of the natural stone, which is termed cement or artificial stone, and consists of a hardened mixture of broken stone or suitable ma terial or the like, and a hydraulic cement, which in practice is prepared by the proper admixture of water, which when the materials of the concrete are properly commingled, undergoes a chemical change commonly described as setting, whereupon the concrete becomes hard and solid like a rock. This curbing may be manufactured in sections, or it may be manufactured continuously and in place, that is to say, on the spot or in the location where it is to be used. In order to prevent breaking or shaling off of the concrete under impact or abrasion 0f the wheels of vehicles to which a curb is necessarily exposed in use, I employ a metallic protective plate or bar particu larly for the curb angle, which-is the portion ofthe curb which in practice requires protecti0n, and I- interlock with such bar a plurality of anchoring devices of novel con-' struction, which engage saidv bar at intervals, preferably of about two feet apart, whereby a metal bound curb or self-contained corner bar is produced, having not only an integral anchorage formed by reason of the wedge-shaped inner terminal of the corner bar, but, in addition, by the employmentof a plurality of novel anchoring devices having cement holding pockets, a more eflicient and durable structure is produced than heretofore, since I insure a secure embedding and retention of the corner bar, together with its anchors, in the concrete curbing evenunder conditions of use where said corner bar is constantly exposed to violent shocks from the wheels of passing vehicles.

To the above ends'my invention consists of a novel construction of metal bound curb and a novel construction of anchoring devices having cement holding pockets interlocked therewith at suitable intervals,whereby a resultant structure of great solidityand durability is produced, as will be hereafter set forth. I

It further consists of other novel features of construction, all as will be hereinafter fully set forth.

For the purpose of illustrating my invention, I have shown in the accompanying drawings, one form thereof which is at present preferred by me, since the same will be found in practice to give satisfactory andre liable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described. 1

Figure l represents a perspective view of my novel construction of metal bound curb mg, showing the manner of assembling the parts prior to embedding the same inconcrete. Flg. Q-represents a perspective sec-- tional view showing the finished curbing with the concrete in posltion withrespect" thereto.

Similar numerals of reference indicate corresponding parts in the figures. A

Referring to the drawin s, in carrying out my invention, I employ a bar 1, which is preferably made of rolled steel with or without galvanizing, and is provided with a convex head or outerportiontil, having a longitudinally extending integral web portion 3, which terminates in an integral longitudinal dove'tailed portion 4:, having the flaring sides 5, said web 3 projecting backwardly on the axial line of the head 2 in such a direction that it is in substantially the plane of the shocks which are received on the head 2 from the wheels of passing vehicles. The longitudinally exe rrsn s'rATEs PATENT OFFICE;

tending integral web 3 extends the entire length of the headQ, and said head and web are preferably-united by obtuse angled, concave lines 6, whilethe construction of I, the inner terminal 4: of said web results in a longitudinally extending dove-tail shaped *anchoragepwhich extends the en-- tire lengthof said web 3 andessists: in 1;.

locking the bar 2 firmly into the con crete 27.

7 designates an anchor or anchoring device, which I employ, the same consisting of a suitable body portion terminating at its inner end in the flaring or wedge-shaped wall 8 and at its outer end provided with a recess 9, whose walls conform to the shape of the longitudinal web 3, it being particularly pointed out that the outer portion of the anchoring device 7 is provided with the arms 10 and 11, which interlock with and engage the juxtaposed, concave walls or members 6, the outer top edge of the anchor 7 being provided with the V-shaped recess or pocket 12, formed by the converging walls 13 and let, the latter wall having the vertical downward extension 15 and the curved portion 16, whereby a recess or pocket 17 is formed, said curved portion terminating in the vertical wall 18, so that as will be understood from Fig. 2, there are two members 15 and 18 formed, between which is the pocket of cement 17 while above said member 15 is a V-shaped pocket of cement 12, whereby an additional interlocking with the cement is formed, as will be understood from Fig. 2.

In laying the curbing, the bar 1 and anchors 7 are preferably arranged at intervals of from one to two feet apart in the concrete, substantially as indicated in Fig. 1, the web 3 with its dove-tailed terminal 4. being surrounded with. the yielding concrete, which is then built up to the proper height behind the corner bar and around the anchors 7 and is tampecl and packed firmly against'the inner and under side of the head 2 and against the sides of the web 3 and the obtuse angles at the junction of the head and web, so that in the curbing as finished, the cement is firmly packed against the web and head and around the anchors 7, and between the anchors and web 3 and dovetail terminal 4;.

In order to enable the anchors 7 to be as firmly interlocked as possible with the cement, I provide each of the same with a series of elongated slots 19, 20, 21, 22 and 23, it being noted that the two outer slots 22 and 23 are located one on each side of the dove-tailed terminals 4 on the Web 3., and, in addition, I employ two slots 24 and 25 in the arms 10 and 11, which extend on each side of the web 3, so that said arms 10 and 11 as well as the body portion of the anchor are firmly embedded in and interlocked with the cement after the same has become set. In addition, by the employment of the pockets 12 and 17 in the outer vertical end walls of the anchors, which are filled with cement when the operation is finished, I cause the outer terminals of each anchor 7 to be firmly interlocked with the cement, so that they are incapable of vertical movement with respect thereto, and furthermore, by having the metallic terminals 15 and 18 flush with the vertical wall 26 of the curbing, it will be seen that the same is considerably reinforced against the shocks or collisions of the wheels of passing vehicles.

I am aware of the patent to Wainwright, No. 727,233, wherein a T-shaped bar is disclosed, but my device is differentiated from the same, since I employ the combination of a T-head bar and the anchoring devices 7, having the novel cement holding pockets formed therein for enabling the cement when set to become interlocked in said pockets, whereby an exceedingly rigid and durable construction is produced. My invention is therefore clearly differentiated from said Vainwright patent, as well as from the patent to Parker, No. 833,623, since neither of said devices employs anchoring devices of the novel construction which I use. Du Fossat, No. 755,623, but my novel construction of anchors is entirely differentiated from said Du Fossat construction, since I employ a different collocation and construction of pockets for enabling the cement when set to become interlocked therewith,,' and, in addition, I provide the outer terminals 15 and 1.8, which are vertical and flush with the vertical wall 26 and have a useful function in facilitating the initial setting of the anchors and curb guard. I am also aware of the patent to Ansley, No. 773,451, but my invention is differentiated therefrom, since I employ the web member 3, having parallel sides ending in a dove-tailed terminal, which are not present in the Ansley construction, and, in addition, I employ a different form of anchoring devices, having a novel collocation and arrangement of pockets for enabling the cement to interlock therewith, which is not present in said patent, and to none of the above-described constructions do I herein make my claim.

In practice, I prefer to leave a small space between the walls of the recess 9 and the web 3 and its adjuncts, so that a thin film of cement 28 may be tamped between the web and the walls of the recess 9. It will also be apparent that the inclined wall 13 of the recess or pocket 12 is located so that when the cement has been tamped into the pocket 12, a very effective union between the bar 1, anchor 7 and the cement pocket 12 is attained.

It will be apparent that the rear or inner, vertical wall 29 of each anchor 7 is flush or in alinement with the rear wall 30 of the concrete, so that the anchor passes completely through the curb from front to back, and I desire to call special attention to the advantages of the employment of my an- I am also aware of the patent to chor, in conjunction with the bar 1. When the bar is used alone without my novel construction of anchoring device, it has a tendency to settle in the mass of concrete during the act of installation, since the concrete is in a semi-plastic condition. By the employment of my novel construction of anchors, the latter are first properly positioned in the concrete by reason of the parallel end terminals 29, 15 and 18, and it is obvious that the bar 1 will be supported in exactly the desired positionin the curb formed while the concrete is being installed. By the employment of the anchors '7, the bar 1 is rigidly and positively supported in the exact position in a corner of a mass of concrete. All the parts, the bar and the anchors can be exactly and accurately positioned by the employment of the proper appliances in connection with the vertical parallel terminals 29, 15 and 18 during the act of installation, and, in addition, the bar 1 is most firmly and eifectively united with the anchors by reason of the interlocking members common thereto, and the anchors are reliably and firmly established in position by reason of the fact that they pass completely through the curb from face to back, as will be understood from Fig. 2.

I am aware that the use of a bar 1 of the character I have described, is public property or a common right in view of the decisions of the Federal courts in the case of Steel Protected Uoncrctc 00. V. Central [mprooememf and Gontmctz'ng 00., 155 Fed. 279 and 158 Fed. 1021, and I therefore make no claim to the use of such a bar per 86, my invention being directed to the novel combination and collocation of devices of which the bar 2 forms but a single element, my claims herein being directed to the combination of the bar 2 with'the novel construction and collocation of anchoring devices which I have hereinbefore described. I am also aware of the patent to Ansley, No. 778,451, granted Oct. 25th, 1904, which discloses the combination of a corner bar having opposite curved faces and converging side walls, but my invention is differentiated therefrom, since I employ a different construction of curb protector and dilferent construction of anchortion of said anchor, whereby a very rigid, durable and eiiicient concrete unitary-structure is produced.

It will now be apparent that I have dethe same is susceptible of modification in various particulars, without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:-

In curbing, a mass of concrete shaped to the face of the curb, a metal corner-bar therefor inserted in said mass of concrete and having a head 2 positioned at the corner of said mass, an integral web 3 extending rearwardly on the axial plane of said head and connected with the sides of said head by obtusely-angled lines, and an integral longitudinal dove-tailed terminal 4 along the inner edge of said Web, whereby said corner bar is interlocked with said mass of concrete, in combination with an anchor having a body and pockets as 19, 21, 22 and 23, said pockets 22 and 23 being located on each side I of said dove-tailed terminal 4, and said anchor being provided with upwardly inclined arms 10 and 11 extending on each side of said web, said arms having on opening between them conforming to the shape of said web, and having pockets 24 and 25 located therein on each side of said web, said anchor being also provided at its outer edge with an upper pocket 12 having inclined walls, and a curved pocket 17, all of said pockets being adapted for the reception of cement, the outer end terminals 15 and 18 of said anchor being flush with the vertical Wall of said curbing and being adapted to facilitate the proper positioning of the anchors and curb bar during the act of setting the same.

ANTHONY ELTON DAVIS. Witnesses:

E. HAYWARD FAIRBANKS, C. D. MoVAY.

Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

